After somewhere around 100 cruises, I will state once again, that the very best, and the very worst cruises we have ever had have both been on CARNIVAL. The worst one was so bad that we got 100% refund, and an apology from a VP. In any case, we sail all the lines, but prefer CELEBRITY, or PRINCESS, but will book CARNIVAL again, in a heartbeat, if the price is right. Try all the lines, and make up your own mind about what you do, and don't like, and whether the price of the "premium" lines is worth the difference, or whether you'd rather take that money, and do another cruise instead!
Happy sailing,
Ken